std::pmr::operator==, std::pmr::operator!=

 

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未初始化内存算法 uninitialized_copy uninitialized_fill uninitialized_move (C++17) uninitialized_default_construct (C++17) uninitialized_value_construct (C++17) destroy (C++17) destroy_at (C++17) voidify (C++20) uninitialized_copy_n (C++11) uninitialized_fill_n uninitialized_move_n (C++17) uninitialized_default_construct_n (C++17) uninitialized_value_construct_n (C++17) destroy_n (C++17) construct_at (C++20) 受约束的未初始化内存算法 ranges::uninitialized_copy (C++20) ranges::uninitialized_fill (C++20) ranges::uninitialized_move (C++20) ranges::construct_at (C++20) ranges::destroy (C++20) ranges::destroy_n (C++20) ranges::destroy_at (C++20) ranges::uninitialized_copy_n (C++20) ranges::uninitialized_fill_n (C++20) ranges::uninitialized_move_n (C++20) ranges::uninitialized_default_construct (C++20) ranges::uninitialized_value_construct (C++20) ranges::uninitialized_default_construct_n (C++20)   ranges::uninitialized_value_construct_n (C++20) 分配器 allocator allocator_traits (C++11) allocation_result (C++23) allocator_arg (C++11) uses_allocator (C++11) uses_allocator_construction_args (C++20) make_obj_using_allocator (C++20) uninitialized_construct_using_allocator (C++20) scoped_allocator_adaptor (C++11) pmr::polymorphic_allocator (C++17) 内存资源 pmr::memory_resource (C++17) pmr::get_default_resource (C++17) pmr::set_default_resource (C++17) pmr::new_delete_resource (C++17) pmr::null_memory_resource (C++17) pmr::synchronized_pool_resource (C++17) pmr::unsynchronized_pool_resource (C++17)   pmr::monotonic_buffer_resource (C++17) pmr::pool_options (C++17) 垃圾回收支持 declare_reachable (C++11)(until C++23) undeclare_reachable (C++11)(until C++23) declare_no_pointers (C++11)(until C++23) undeclare_no_pointers (C++11)(until C++23) pointer_safety (C++11)(until C++23) get_pointer_safety (C++11)(until C++23) 未初始化存储 raw_storage_iterator (until C++20*) get_temporary_buffer (until C++20*) return_temporary_buffer (until C++20*) 显式生命周期管理 start_lifetime_asstart_lifetime_as_array (C++23)(C++23)

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std::pmr::memory_resource

memory_resource::memory_resource

公有成员函数

memory_resource::allocate

memory_resource::deallocate

memory_resource::is_equal

私有成员函数

memory_resource::do_allocate

memory_resource::do_deallocate

memory_resource::do_is_equal

非成员函数

operator==operator!= (until C++20)

 

定义在头文件 <memory_resource> 中
bool operator==( const std::pmr::memory_resource& a,                  const std::pmr::memory_resource& b ) noexcept;	(1)	(自 C++17 起)
bool operator!=( const std::pmr::memory_resource& a,                  const std::pmr::memory_resource& b ) noexcept;	(2)	(自 C++17 起) (直到 C++20)

比较 memory_resource a 和 b 是否相等。两个 memory_resource 相等的充要条件是，从一个 memory_resource 分配的内存可以从另一个 memory_resource 释放，反之亦然。

!= 运算符是根据 operator== 合成的。

(自 C++20 起)

返回值

1) &a == &b || a.is_equal(b)

2) !(a == b)

另请参阅

is_equal

与另一个 memory_resource 比较是否相等 (public member function)